Regulating carburetor



March 18, 1958 c. T. CORSO REGULATING CARBURETOR 2 Sheets-Sheet 1 Filed March 21, 1956 INVENTOR.

(21 60522 0 2 faaya March 18, 1958 c. T. coRso 2,327,273

REGULATING CARBURETOR I Filed March 21 1956 2 Sheets-Sheet 2 INVEN TOR.

nited States Patent 22,827,273 4 REGULATING CARBURETOR Calogero T. Corso, Bayviile, 'Y. Application March 21, 1956, Serial No. 572,989

2 Claims. (or. 261- 56) This invention relates to fuel: and air mixing. devices and the 'like,-and particularly to a special regulating carburetor. V v

The main object ofmyinvention'is to provide av liquid fuel carburetor for. supplying'a fuel --mixture to aninternal combustion motor or engine in proper proportions to operate'at-peak:efiieiency.

'- Another important object of this invention is to pro- :vide-a; carburetor that is especially equipped to regulate the fuelandair mixture'to nice proportions-as desired.

'A-furtherobj'ect-of the invention isto have-such a carburetor which may be built-in upon the-internal combustion-- 'engi-newith which itis connected to enhance the operation of both carburetor and engine due to theirclose association.

w it isalso a; practical objector-my invention to provide the carburetor-with regulating-means and special successive mixing chambers --forming part i of the carburetor :structure.

Another quite practical I object "of theinvention :is to l have a carburetor'oi the character indicated which is reladrawing forming'part hereof, and in which:

Figure-l is a'side'elevation, largely in section of a carburetor made according to the invention and embodying the same in a practical form;

Figure-Zzis a section of the carburetor 'astaken'on line =2-2 in Figure l; Figure 3-is another section of the "carburetor. 'as'taken on line 3-3 in said Figure 1;

Figure 4 is a further: section of'the same carburetor as taken on line 4=4-inthe same Figure 1;

Figure 5 is also a section of the carburetor as taken I on line 5-5- in said Figure 1'; :and

Figure '6 -is' likewisea section or the same "carburetor as taken on line 6"6:in aforesaidFigure' 1, ancl '-Figure-'7=is 'a niodification of the upper valve inFigure '1 also shown at the-left in Figure 3.

Throughout the views, "the" same reference snumerals indicate the *same OI' 'ilkfii'PfiflS and features.

- It is quite well accepted that'an internal i combustion operating at high efficiency in great volume of mixture 2,3272% Patented Mar. 18, 1958 12 d eliveredyand should" certainly be capable of-fine regulation. Also, itis essential that such a carburetor should .be constant and'reliable in operation-so that the engine will operate uniformly well at all timesand under perfect 6 control. It is also important that the carburetor should :be simple as possible in construction and not likely to get out of order, but instead befsturdy and durable.

As a result of considering this problem, I have'succeeded in producing-a regulating carburetor along the lines falreadyfindic atedwhichwill nowbe described in detail in the following. g I 4 v ence, tin ther practice. of, my invention,- and referring I also to thedraWing again, the'ca'rburetor, generally indicated-at 7, primarily includes a cover casting or block 8 l5 has-a vertical air intake: passage 9 and a horizontal air transferfpassage 10 connected thereto controlled by a flap tvalve orfdamper type valvefll with a control lever 12 "rigid withl'thevalve. and capableof swinging it open or ,closed 'toi'fvarying Idegrees. At the extending'end of this blocks, passagef'ltl;terminates in an upwardly directed 1 chambert13;closcd labove'bya valve casting or plug 14 screwed 'iiito'the upper interiorthread 15 of chamber 13. "This, valvef plug has? a valve seat. 16 for a valve 17.having a stem?18lguidedfvertically. at',19 in casting 14, the latter having'alplurality. erapermrceze, .20 above the1v-alve fseat l pro'viding passage 'forf air to passage, 10 via chamber l3' from'fchamber,21,;iniplugor-casting 14. Valve :17 isnorni'a lly 'biasdfilpwar'dly to its seat 16 by a spring 22 resting-'21,cupt23fat"theVupper-endof a regulating screw 30, 24 having the h'e'ad'ZS by which toadjust itto increase or reduce resilientpfessu're-of the spring against valve 17.

However, theflrnain air supply enters thedevice from abovepassage 9by way of an air-intake 26 in an upright tube memberfiif'secured'fupon casting 8 by, screws 28, 28 35 and'fo'rrnin'g part of the upper casting 29. Through tube a member 271 extendsattran'sverse valve .shaft30 upon which is' mounted a dampertype valv'e -31 within passage 26, ,While eXte'r'ioriy of'tube 27I this shafts carries a lever 32 .by which: to operate valve 31 to controlthe tube passage 40 for 'inco'ming'air. Upon lever SZisLfiXed a crank pin33 extending throughra hole 34'in'a link 35 having an arcuate notes at its other. end in which aisecond crankpin fits slid-ably'at 3'7 which projects from the first mentioned 1ever:-12, thus providing'a mechanical connection between 45 both levers, as will be further-explained.

vInlthe mentioned castingr2 9'are boredipassages 33, 39 at rightangles to teach otheriandat their outer tends plugged by screws 40 and 4.1:but interconnected at their ang'ul-ar junction, as evident-in Figure 1, while in Figure 3 0 is shown rearward branch passage 42 by which thispassage arrangement connects with fuel injectortube44 projectinginto vertical air intake passage 26. Within casting 29 is also formed a cylindrical seat 43 occupied by a valve casing 45 having in turn an upwardly directed cylindrical valve chamber 46 with an internal thread 47 in the upperportion thereof. Into this :valve chamber is screwed an upwardly threaded stationary valve member 48 having a valve chamber 49 with a lowerttapering valve seat 50 for a verticallyrmovable valve-lhaving a valve 0 stein 52 extending slidably-upward through a valve cap 53 screwedupon casing 48,2. compression spring -54 biasingtliejlvalve downwardinto its seat. Although this socalle d valvqis so constructed'that it may .be,lifted,-its .oflice is to determine the jamount oflliquid ,fuel flow 65 from a'fuel tank 55 through injector 44 into air intake 2 6,"th,e valve being a mereirotaryi adjusting member-adrjusted bynturningthe stem 52 by means of ahandle or leyieron thislstemtnot shown). v p

Csirig fSjis provided with atperipheral channel or lpa'ssage 56f communicatingjwith an upright-central bore '57','in'{rotary regulating memberS l by a radial bore 58 whic ihfis one of threein the latter member capable of 57 in member 51 communicates at the bottom through bottom opening 63 inthe member 45 and casting 29, interconnecting the injector 44 with tank 55.

- The bottom casting shown in Figures 1 and 4 is a secured to the main casing 8 already described by screws 65, 65 etc.,' and has a downward central passage 66 forming a central chamber communicating at the too with air intake passage 26,.this casting having an applied or integral bottom 67 forming a closure for the chambers in bottom casting 64. .The latter has a partial circular nartition or wall 68 with an opening 69 to a surrounding chamber 70 bounded bv a second circular wall 71 having an opening 72 leading into a further chamber 73 ikewise bounded by a circu ar wall 74 having an opening 75 leading into the general interior chamber 76 of the casting or block 64 as a whole. The chamber 76 therein'has a passage 77 and 78 leading .to the engine or motor for supplying the same with fuel and air mixture. which may be made rich, lean or average by adjustment of rotary regulating member 51 by turning its stem 52.: Naturallv. the engine produces a certain amount of suction which is communicated through openings 77 to the interior of the device and causes air to be drawn into air intake 26,

' .erns the amount of air used and the fuel rate of fiow set by regulating member 51 sets the pace for the'engine to which openings 77, 78 communicate the fuel and air mixture that is developed by the air passing down through passages 26, 9 and 66 and through the alternately reversed circular chambers 70, 73 and 76, the air meanwhile pass ing fuel injector 44 in passage 26. V

Instead of the valve casing 48 and valve or regulating member 51 being used for admitting and controlling the entry of fuel into the device, thevalve structure shown in Figure 7 may be used, the casing 79 having the inner chamber 80 with the needle valve 81 cooperating with the aperture 82 in the bottom, while the spring 83 bears down on flange 84 of valve stem 85, and chamber 80 communicates with passage 60 in block29 and through passage 62 with tank 55 when this valve. assembly is in'place;

The spring 83' by its resilient pressure on valve 81 tends to regulate flow of fuel through valve aperture 86 and passages 60, 62,. 63 and 82 and thus form an automatic regulating means for determining the amount of fuel fed to injector 44 from tank 55, which naturally determines the operation of the engine on an economical fuel saving basis, The air'control is automatic between valves 11 and 31 due to their interconnection by levers 32 and 12 by link 35. j V

In any case, the described regulating carburetor serves to automatically regulate the amount of fuel and air that is .fed to an engine to which it. is connected when once 7 set and connected to the engine and supplied with liquid fuel such .as gasoline or the like. The alternate form of fuel valve casing '79 has the upper end threaded at 86 upon which a cap 87 is fitted through which valve stem 85, slidably extends like valve stem 52 through cap 53..

As already mentioned the present invention has the purpose of raising to a maximum degree the performance 48, 49, 51, 52 and 53, and replacing them by, the structure as shown in Figure 7, a continuous gas regulation is obtained, while still retaining remote control at the drivers option.

The automatic air regulationis obtained by means of the structure shown in Figure 5 and at the left in Figure 1, of the drawing. The foregoing construction may be installed onall types of motors without including the semicylindrical batlles best shown in Figure 4 of the drawing.

It will be sufiicient to regulate valve 17 by means of spring 22 pressed downwardly upon and held downwardly by means of the screw 25. a a

The system operates as follows: The air which enters from through intake member 26, whenever the motor operates at high speed is not sufiicient to follow up without additional means the strong continuous suction of the motor. In order to relieve this condition, valve 17 starts to function and thus valve 11 with arm 12 and connecting rod act on pin 34, and thereby on arm 32. Upon such action, butterfly valve 11 starts to open atthe'point at which the accelerator valve 31 has such an opening as to cause the development of approximately half speed operation of the motor.

Upon valve 11 starting to open, valve 17 opens only if suction prevails in chamber 13, i. e., if themotor operates without obtaining-the air it requires, a suction is produced in said chamber 13 and only then does the valve 17 open ure 4.

Thus, the maximum performance of the motor is permanently obtained and regardless of the speed the motor will render highest performance at minimum consumption 1. In an adjustable internal'combustion engine cara buretor, the combination of a carburetor block having of the motor while keeping its consumption at a minimum. a

Figure 3 of the drawings shows the gas regulation system with remote control. By eliminating the valve struc-' versepassage, a fuel injector connected to a fuel supply tank extending to and projecting transversely intothe downward air' intake passage in one side thereof at a predetermined distance above said transverse passage, .a first regulating means in said air intake passage for regulating the downwardflow of air into the latter toward said transversepassage, a manually rotatably adjustable fuel valve disposed above the other end of said carburetor block in the connection'between the fuel supply tank and the fuel injectorand rotatableabout a vertical axis, a valve casing rigid with the carburetor block at said other end thereof having a valve chamber and an auxiliary air intake passage extending'upwards therefrom, said carburetor block above the level of the transverse passage having a further lateral passage interconnecting the valve chamber and the open air intake passage, a second regulating means in the further lateral passage, a link means interconnecting thelfirst and second regulating means for simultaneous operation, a valve seat mounted in' the auxiliary air intake'passage in the valve casing, a vertically movable valve, member below the valve seat for engaging with saidivalve. seat in the valve chamber, a compression spring'disposed beneath saidvalve member i'n'said valve chamber biasing the valve member upward to said valve seat, and an adjusting screw extending from an exterior-ly accessible position below said valve casing upwardly into "the valve chamber and adjustably supporting said spring above the upper end of said adjusting screw.

2. In an adjustable carburetor according to claim 1, the features including having the carburetor block enlarged interiorly to form a lateral chamber at the lower end of the open air intake passage below the level of the fuel valve and of the vertically movable valve member, said lateral chamber forming part of the transverse air passage in said block, and having a series of successively larger substantially concentric baffles surrounding the lower end of said open air passage with openings in alternately opposite sides of said bafiles.

References Cited in the file of this patent UNITED STATES PATENTS Clemmer Apr. 14, 1914 Livingston Dec. 24, 1918 Timian Sept. 18, 1934 Brasseur Oct. 28, 1941 Vallier July 4, 1944 McConnell Oct. 16, 1956 

